Fab simulation with recipe arrangement of tools

Park, Sang C.; Ahn, Euikoog; Chung, Yongho; Yang, Kai-Shing; Kim, Byung H.; Seo, Jeong Cheol

doi:10.1109/wsc.2013.6721743

Cited by 7 publications

(1 citation statement)

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“…Among the needs, the achievement of better due dates is extremely important for order-driven FABs. The effective scheduling of order-driven FABs have been considered as one of the most complicated problems because of hundreds of steps for a product, re-entrant flows, and batch processing [6,7]. A FAB can be seen as a complex job shop, and the job shop-scheduling problem is often considered as a sequencing problem to determine the processing order of operations on the machines [8].…”

Section: Introductionmentioning

confidence: 99%

On-Time Delivery Achievement of High Priority Orders in Order-Driven Fabrications

Seo¹,

Chung²,

Park³

2015

Int. j. simul. model.

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This paper proposes a new dispatching rule to achieve the on-time delivery of high priority lots in order-driven fabrications (FABs). Most of conventional dispatching rules can be considered as the variants of classical rules like ODD, EDD, and CR. Although, many of conventional dispatching rules give good performance in terms of the on-time delivery, they do not consider the existence of high priority lots. We classify orders into two types for an order-driven FAB; regular orders and high priority orders. While regular orders are typically characterized by longer cycle times, looser target due dates but lower margins, the high priority orders have shorter cycle times, tighter target due dates and higher margins. If the deliveries of high priority orders are late, the manufacturer may have to pay a significant amount of penalty charges. The proposed dispatching rule employs the concept of reservations of high priority lots, and consists of two major steps; 1) finding a high priority lot for reservation, and 2) finding a tool for reservation. The first step tries to minimize the waiting time of high priority lots, and the second step tries to maximize the utilization of tools. Experimental results show that the proposed dispatching rule is superior over conventional rules with regard to on-time delivery of high priority lots.

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Section: Introductionmentioning

confidence: 99%